forked from date-fns/date-fns
/
test.ts
executable file
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/
test.ts
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/* eslint-env mocha */
import assert from 'assert'
import previousMonday from '.'
describe('previousMonday', function () {
it('returns the previous Monday given various dates after the same', function () {
assert.deepStrictEqual(
previousMonday(new Date(2021, 5 /* Jun */, 5)),
new Date(2021, 4 /* May */, 31)
)
assert.deepStrictEqual(
previousMonday(new Date(2021, 5 /* Jun */, 6)),
new Date(2021, 4 /* May */, 31)
)
assert.deepStrictEqual(
previousMonday(new Date(2021, 5 /* Jun */, 7)),
new Date(2021, 4 /* May */, 31)
)
assert.deepStrictEqual(
previousMonday(new Date(2021, 5 /* Jun */, 14)),
new Date(2021, 5 /* Jun */, 7)
)
assert.deepStrictEqual(
previousMonday(new Date(2021, 5 /* Jun */, 15)),
new Date(2021, 5 /* Jun */, 14)
)
assert.deepStrictEqual(
previousMonday(new Date(2021, 5 /* Jun */, 16)),
new Date(2021, 5 /* Jun */, 14)
)
})
it('returns `Invalid Date` if the given date is invalid', function () {
assert(previousMonday(new Date(NaN)) instanceof Date)
})
})